/* packet-isis-lsp.c
* Routines for decoding isis lsp packets and their CLVs
*
- * $Id: packet-isis-lsp.c,v 1.11 2001/04/08 19:32:03 guy Exp $
+ * $Id: packet-isis-lsp.c,v 1.25 2002/01/21 07:36:36 guy Exp $
* Stuart Stanley <stuarts@mxmail.net>
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@zing.org>
+ * By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
- *
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- *
*/
#ifdef HAVE_CONFIG_H
#include <net/inet.h>
#endif
-#include "packet.h"
+#include "epan/ipv4.h"
+#include <epan/packet.h>
#include "packet-osi.h"
+#include "packet-ipv6.h"
#include "packet-isis.h"
#include "packet-isis-clv.h"
#include "packet-isis-lsp.h"
-#include "resolv.h"
+#include <epan/resolv.h>
/* lsp packets */
-static int proto_isis_lsp = -1;
static int hf_isis_lsp_pdu_length = -1;
static int hf_isis_lsp_remaining_life = -1;
static int hf_isis_lsp_sequence_number = -1;
static int hf_isis_lsp_checksum = -1;
static int hf_isis_lsp_clv_ipv4_int_addr = -1;
+static int hf_isis_lsp_clv_ipv6_int_addr = -1;
+static int hf_isis_lsp_clv_te_router_id = -1;
+static int hf_isis_lsp_clv_mt = -1;
static gint ett_isis_lsp = -1;
static gint ett_isis_lsp_clv_area_addr = -1;
static gint ett_isis_lsp_clv_is_neighbors = -1;
+static gint ett_isis_lsp_clv_ext_is_reachability = -1; /* CLV 22 */
+ static gint ett_isis_lsp_part_of_clv_ext_is_reachability = -1;
+ static gint ett_isis_lsp_subclv_admin_group = -1;
+ static gint ett_isis_lsp_subclv_unrsv_bw = -1;
static gint ett_isis_lsp_clv_unknown = -1;
static gint ett_isis_lsp_clv_partition_dis = -1;
static gint ett_isis_lsp_clv_prefix_neighbors = -1;
static gint ett_isis_lsp_clv_nlpid = -1;
static gint ett_isis_lsp_clv_hostname = -1;
+static gint ett_isis_lsp_clv_te_router_id = -1;
static gint ett_isis_lsp_clv_auth = -1;
static gint ett_isis_lsp_clv_ipv4_int_addr = -1;
+static gint ett_isis_lsp_clv_ipv6_int_addr = -1; /* CLV 232 */
static gint ett_isis_lsp_clv_ip_reachability = -1;
+static gint ett_isis_lsp_clv_ext_ip_reachability = -1; /* CLV 135 */
+ static gint ett_isis_lsp_part_of_clv_ext_ip_reachability = -1;
+static gint ett_isis_lsp_clv_ipv6_reachability = -1; /* CLV 236 */
+ static gint ett_isis_lsp_part_of_clv_ipv6_reachability = -1;
+static gint ett_isis_lsp_clv_mt = -1;
+static gint ett_isis_lsp_clv_mt_is = -1;
+static gint ett_isis_lsp_part_of_clv_mt_is = -1;
static const char *isis_lsp_attached_bits[] = {
"error", "expense", "delay", "default" };
{ ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
{ ISIS_LSP_TYPE_LEVEL_1, "Level 1 IS"},
{ ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
- { ISIS_LSP_TYPE_LEVEL_2, "Level 2 IS"},
+ { ISIS_LSP_TYPE_LEVEL_2, "Level 1 and Level 2 IS"},
{ 0, NULL } };
/*
* Predclare dissectors for use in clv dissection.
*/
-static void dissect_lsp_area_address_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_l1_is_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_l1_es_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_l2_is_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_partition_dis_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_prefix_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_ip_reachability_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_nlpid_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_hostname_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_ip_int_addr_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_l1_auth_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
-static void dissect_lsp_l2_auth_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree);
+static void dissect_lsp_prefix_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_partition_dis_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_mt_is_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ext_is_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_l2_is_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_l1_es_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_l1_is_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_area_address_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_l2_auth_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_l1_auth_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ipv6_int_addr_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ip_int_addr_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_te_router_id_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_hostname_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_mt_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_nlpid_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ipv6_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ext_ip_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+static void dissect_lsp_ip_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length);
+
+
static const isis_clv_handle_t clv_l1_lsp_opts[] = {
{
},
{
ISIS_CLV_L1_LSP_IS_NEIGHBORS,
- "IS Neighbor(s)",
+ "IS Reachability",
&ett_isis_lsp_clv_is_neighbors,
dissect_lsp_l1_is_neighbors_clv
},
&ett_isis_lsp_clv_is_neighbors,
dissect_lsp_l1_es_neighbors_clv
},
+ {
+ ISIS_CLV_L1_LSP_EXT_IS_REACHABLE,
+ "Extended IS reachability",
+ &ett_isis_lsp_clv_ext_is_reachability,
+ dissect_lsp_ext_is_reachability_clv
+ },
{
ISIS_CLV_L1_LSP_IP_INT_REACHABLE,
"IP Internal reachability",
&ett_isis_lsp_clv_ip_reachability,
dissect_lsp_ip_reachability_clv
},
+ {
+ ISIS_CLV_L1_LSP_IP_EXT_REACHABLE,
+ "IP External reachability",
+ &ett_isis_lsp_clv_ip_reachability,
+ dissect_lsp_ip_reachability_clv
+ },
+ {
+ ISIS_CLV_L1_LSP_EXT_IP_REACHABLE,
+ "Extended IP Reachability",
+ &ett_isis_lsp_clv_ext_ip_reachability,
+ dissect_lsp_ext_ip_reachability_clv
+ },
+ {
+ ISIS_CLV_L1_LSP_IPv6_REACHABLE,
+ "IPv6 reachability",
+ &ett_isis_lsp_clv_ipv6_reachability,
+ dissect_lsp_ipv6_reachability_clv
+ },
{
ISIS_CLV_L1_LSP_NLPID,
- "NLPID",
+ "Protocols supported",
&ett_isis_lsp_clv_nlpid,
dissect_lsp_nlpid_clv
},
&ett_isis_lsp_clv_hostname,
dissect_lsp_hostname_clv
},
+ {
+ ISIS_CLV_L1_LSP_TE_ROUTER_ID,
+ "Traffic Engineering Router ID",
+ &ett_isis_lsp_clv_te_router_id,
+ dissect_lsp_te_router_id_clv
+ },
{
ISIS_CLV_L1_LSP_IP_INTERFACE_ADDR,
"IP Interface address(es)",
&ett_isis_lsp_clv_ipv4_int_addr,
dissect_lsp_ip_int_addr_clv
},
+ {
+ ISIS_CLV_L1_LSP_IPv6_INTERFACE_ADDR,
+ "IPv6 Interface address(es)",
+ &ett_isis_lsp_clv_ipv6_int_addr,
+ dissect_lsp_ipv6_int_addr_clv
+ },
{
ISIS_CLV_L1_LSP_AUTHENTICATION_NS,
"Authentication(non-spec)",
&ett_isis_lsp_clv_auth,
dissect_lsp_l1_auth_clv
},
+ {
+ ISIS_CLV_L1_LSP_MT,
+ "Multi Topology",
+ &ett_isis_lsp_clv_mt,
+ dissect_lsp_mt_clv
+ },
+ {
+ ISIS_CLV_L1_LSP_MT_IS_REACHABLE,
+ "Multi Topology IS Reachability",
+ &ett_isis_lsp_clv_mt_is,
+ dissect_lsp_mt_is_reachability_clv
+ },
+
{
0,
"",
},
{
ISIS_CLV_L2_LSP_IS_NEIGHBORS,
- "IS Neighbor(s)",
+ "IS Reachability",
&ett_isis_lsp_clv_is_neighbors,
dissect_lsp_l2_is_neighbors_clv
},
+ {
+ ISIS_CLV_L2_LSP_EXT_IS_REACHABLE,
+ "Extended IS reachability",
+ &ett_isis_lsp_clv_ext_is_reachability,
+ dissect_lsp_ext_is_reachability_clv
+ },
{
ISIS_CLV_L2_LSP_PARTITION_DIS,
"Parition Designated Level 2 IS",
&ett_isis_lsp_clv_ip_reachability,
dissect_lsp_ip_reachability_clv
},
+ {
+ ISIS_CLV_L2_LSP_IP_EXT_REACHABLE,
+ "IP External reachability",
+ &ett_isis_lsp_clv_ip_reachability,
+ dissect_lsp_ip_reachability_clv
+ },
{
ISIS_CLV_L2_LSP_NLPID,
- "NLPID",
+ "Protocols supported",
&ett_isis_lsp_clv_nlpid,
dissect_lsp_nlpid_clv
},
&ett_isis_lsp_clv_hostname,
dissect_lsp_hostname_clv
},
+ {
+ ISIS_CLV_L2_LSP_TE_ROUTER_ID,
+ "Traffic Engineering Router ID",
+ &ett_isis_lsp_clv_te_router_id,
+ dissect_lsp_te_router_id_clv
+ },
{
- ISIS_CLV_L2_LSP_IP_EXT_REACHABLE,
- "IP external reachability",
- &ett_isis_lsp_clv_ip_reachability,
- dissect_lsp_ip_reachability_clv
+ ISIS_CLV_L2_LSP_EXT_IP_REACHABLE,
+ "Extended IP Reachability",
+ &ett_isis_lsp_clv_ext_ip_reachability,
+ dissect_lsp_ext_ip_reachability_clv
+ },
+ {
+ ISIS_CLV_L2_LSP_IPv6_REACHABLE,
+ "IPv6 reachability",
+ &ett_isis_lsp_clv_ipv6_reachability,
+ dissect_lsp_ipv6_reachability_clv
},
{
ISIS_CLV_L2_LSP_IP_INTERFACE_ADDR,
&ett_isis_lsp_clv_ipv4_int_addr,
dissect_lsp_ip_int_addr_clv
},
+ {
+ ISIS_CLV_L2_LSP_IPv6_INTERFACE_ADDR,
+ "IPv6 Interface address(es)",
+ &ett_isis_lsp_clv_ipv6_int_addr,
+ dissect_lsp_ipv6_int_addr_clv
+ },
{
ISIS_CLV_L2_LSP_AUTHENTICATION_NS,
"Authentication(non spec)",
&ett_isis_lsp_clv_auth,
dissect_lsp_l2_auth_clv
},
+ {
+ ISIS_CLV_L2_LSP_MT,
+ "Multi Topology",
+ &ett_isis_lsp_clv_mt,
+ dissect_lsp_mt_clv
+ },
+ {
+ ISIS_CLV_L2_LSP_MT_IS_REACHABLE,
+ "Multi Topology IS Reachability",
+ &ett_isis_lsp_clv_mt_is,
+ dissect_lsp_mt_is_reachability_clv
+ },
{
0,
"",
* The 7th bit must be zero (reserved).
*
* Input:
- * u_char * : packet data
- * int : offset into packet data where we are.
- * guint : length of clv we are decoding
- * frame_data * : frame data (complete frame)
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
* proto_tree * : protocol display tree to fill out. May be NULL
+ * int : offset into packet data where we are.
+ * guint8 : value of the metric.
+ * char * : string giving type of the metric.
* int : force supported. True is the supported bit MUST be zero.
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_metric(proto_tree *tree, int offset, guint8 value,
- char *pstr, int force_supported ) {
+dissect_metric(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
+ int offset, guint8 value, char *pstr, int force_supported )
+{
int s;
if ( !tree ) return;
s = ISIS_LSP_CLV_METRIC_SUPPORTED(value);
- proto_tree_add_text ( tree, NullTVB, offset, 1,
+ proto_tree_add_text(tree, tvb, offset, 1,
"%s Metric: %s%s %s%d:%d", pstr,
s ? "Not supported" : "Supported",
(s && force_supported) ? "(but is required to be)":"",
ISIS_LSP_CLV_METRIC_VALUE(value), value );
}
-
/*
- * Name: dissect_lsp_ip_reachabillityclv()
+ * Name: dissect_lsp_ip_reachability_clv()
*
* Description:
* Decode an IP reachability CLV. This can be either internal or
* are a metric block followed by an IP addr and mask.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
* int : current offset into packet data
- * guint : length of this clv
* int : length of IDs in packet.
- * frame_data * : frame data
- * proto_tree * : proto tree to build on (may be null)
+ * int : length of this clv
*
* Output:
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_ip_reachability_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
+dissect_lsp_ip_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
proto_item *ti;
proto_tree *ntree = NULL;
- guint32 src, mask;
+ guint32 src, mask, prefix_len;
+ guint32 bitmasks[33] = {
+ 0x00000000,
+ 0x00000008, 0x0000000c, 0x0000000e, 0x0000000f,
+ 0x000000f8, 0x000000fc, 0x000000fe, 0x000000ff,
+ 0x000008ff, 0x00000cff, 0x00000eff, 0x00000fff,
+ 0x0000f8ff, 0x0000fcff, 0x0000feff, 0x0000ffff,
+ 0x0008ffff, 0x000cffff, 0x000effff, 0x000fffff,
+ 0x00f8ffff, 0x00fcffff, 0x00feffff, 0x00ffffff,
+ 0x08ffffff, 0x0cffffff, 0x0effffff, 0x0fffffff,
+ 0xf8ffffff, 0xfcffffff, 0xfeffffff, 0xffffffff
+ };
+
+
while ( length > 0 ) {
if (length<12) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"short IP reachability (%d vs 12)", length );
return;
}
* Gotta build a sub-tree for all our pieces
*/
if ( tree ) {
- memcpy(&src, &pd[offset+4], 4);
- memcpy(&mask, &pd[offset+8], 4);
- ti = proto_tree_add_text ( tree, NullTVB, offset, 12,
- "IP prefix: %s (%s) : %s",
- get_hostname(src), ip_to_str((guint8*)&src),
- ip_to_str((guint8*)&mask) );
+ tvb_memcpy(tvb, (guint8 *)&src, offset+4, 4);
+ tvb_memcpy(tvb, (guint8 *)&mask, offset+8, 4);
+
+ /* find out if the mask matches one of 33 possible prefix lengths */
+
+ prefix_len=0;
+
+ while(prefix_len<=33) {
+ if (bitmasks[prefix_len++]==mask) {
+ prefix_len--;
+ break;
+ }
+ }
+
+ /* 34 indicates no match -> must be a discontiguous netmask
+ lets dump the mask, otherwise print the prefix_len */
+
+ if(prefix_len==34) {
+ ti = proto_tree_add_text ( tree, tvb, offset, 12,
+ "IPv4 prefix: %s mask %s",
+ ip_to_str((guint8*)&src),
+ ip_to_str((guint8*)&mask));
+ } else {
+ ti = proto_tree_add_text ( tree, tvb, offset, 12,
+ "IPv4 prefix: %s/%d",
+ ip_to_str((guint8*)&src),
+ prefix_len );
+ };
+
ntree = proto_item_add_subtree(ti,
ett_isis_lsp_clv_ip_reachability);
- dissect_metric ( ntree, offset, pd[offset], "Default",
- TRUE );
- dissect_metric ( ntree, offset + 1, pd[offset+1],
- "Delay", FALSE );
- dissect_metric ( ntree, offset + 2, pd[offset+2],
- "Expense",FALSE );
- dissect_metric ( ntree, offset + 3, pd[offset+3],
- "Error", FALSE );
+
+ proto_tree_add_text (ntree, tvb, offset, 1,
+ "Default Metric: %d, %s, Distribution: %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset)) ? "External" : "Internal",
+ ISIS_LSP_CLV_METRIC_UPDOWN(tvb_get_guint8(tvb, offset)) ? "down" : "up");
+
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+1))) {
+ proto_tree_add_text (ntree, tvb, offset+1, 1, "Delay Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+1, 1, "Delay Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+1)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+1)) ? "External" : "Internal");
+ }
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+2))) {
+ proto_tree_add_text (ntree, tvb, offset+2, 1, "Expense Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+2, 1, "Exense Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+2)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+2)) ? "External" : "Internal");
+ }
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+3))) {
+ proto_tree_add_text (ntree, tvb, offset+3, 1, "Error Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+3, 1, "Error Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+3)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+3)) ? "External" : "Internal");
+ }
}
offset += 12;
length -= 12;
}
}
+
+/*
+ * Name: dissect_lsp_ext_ip_reachability_clv()
+ *
+ * Description: Decode an Extended IP Reachability CLV - code 135.
+ *
+ * The extended IP reachability TLV is an extended version
+ * of the IP reachability TLVs (codes 128 and 130). It encodes
+ * the metric as a 32-bit unsigned interger and allows to add
+ * sub-CLV(s).
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
+ * int : current offset into packet data
+ * int : length of IDs in packet.
+ * int : length of this clv
+ *
+ * Output:
+ * void, will modify proto_tree if not null.
+ */
+static void
+dissect_lsp_ext_ip_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ proto_item *pi = NULL;
+ proto_tree *subtree = NULL;
+ guint8 ctrl_info;
+ guint8 bit_length, byte_length;
+ guint8 prefix [4];
+ guint8 len;
+
+ if (!tree) return;
+
+ while (length > 0) {
+ memset (prefix, 0, 4);
+ ctrl_info = tvb_get_guint8(tvb, offset+4);
+ bit_length = ctrl_info & 0x3f;
+ byte_length = (bit_length + 7) / 8;
+ tvb_memcpy (tvb, prefix, offset+5, byte_length);
+ pi = proto_tree_add_text (tree, tvb, offset, -1,
+ "IPv4 prefix: %s/%d",
+ ip_to_str (prefix),
+ bit_length );
+ subtree = proto_item_add_subtree (pi,
+ ett_isis_lsp_part_of_clv_ext_ip_reachability);
+
+ proto_tree_add_text (subtree, tvb, offset, 4,
+ "Metric: %d, Distribution: %s", tvb_get_ntohl(tvb, offset), ((ctrl_info & 0x80) == 0) ? "up" : "down" );
+
+ proto_tree_add_text (subtree, tvb, offset+4, 1,
+ "%s sub-TLVs present",
+ ((ctrl_info & 0x40) == 0) ? "no" : "" );
+
+ len = 5 + byte_length;
+ if ((ctrl_info & 0x40) != 0)
+ len += 1 + tvb_get_guint8(tvb, offset+len) ;
+ proto_item_set_len (pi, len);
+ offset += len;
+ length -= len;
+ }
+}
+
+/*
+ * Name: dissect_lsp_ipv6_reachability_clv()
+ *
+ * Description: Decode an IPv6 reachability CLV - code 236.
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
+ * int : current offset into packet data
+ * int : length of IDs in packet.
+ * int : length of this clv
+ *
+ * Output:
+ * void, will modify proto_tree if not null.
+ */
+static void
+dissect_lsp_ipv6_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ proto_item *ti;
+ proto_tree *ntree = NULL;
+ guint8 bit_length, byte_length;
+ struct e_in6_addr prefix;
+ guint8 ctrl_info;
+ guint32 metric;
+ guint8 len;
+
+ if (!tree) return;
+
+ memset (prefix.s6_addr, 0, 16);
+
+ while (length > 0) {
+ bit_length = tvb_get_guint8(tvb, offset+5);
+ byte_length = (bit_length + 7) / 8;
+ tvb_memcpy (tvb, prefix.s6_addr, offset+6, byte_length);
+ ti = proto_tree_add_text (tree, tvb, offset, -1,
+ "IP prefix: %s /%d",
+ ip6_to_str (&prefix),
+ bit_length );
+ ntree = proto_item_add_subtree (ti, ett_isis_lsp_part_of_clv_ipv6_reachability);
+
+ metric = tvb_get_ntohl(tvb, offset);
+ proto_tree_add_text (ntree, tvb, offset, 4,
+ "Metric: %d", metric);
+
+ ctrl_info = tvb_get_guint8(tvb, offset+4);
+ proto_tree_add_text (ntree, tvb, offset+4, 1,
+ "Distribution: %s, %s",
+ ((ctrl_info & 0x80) == 0) ? "up" : "down",
+ ((ctrl_info & 0x40) == 0) ? "internal" : "external" );
+
+ proto_tree_add_text (ntree, tvb, offset+4, 1,
+ "Reserved bits: 0x%x",
+ (ctrl_info & 0x1f) );
+ proto_tree_add_text (ntree, tvb, offset+4, 1,
+ "sub-TLVs: %s",
+ ((ctrl_info & 0x20) == 0) ? "no" : "yes" );
+
+ len = 6 + byte_length;
+ if ((ctrl_info & 0x20) != 0)
+ len += 1 + tvb_get_guint8(tvb, offset+len);
+ proto_item_set_len (ti, len);
+ offset += len;
+ length -= len;
+ }
+}
+
/*
* Name: dissect_lsp_nlpid_clv()
*
* clv common one.
*
* Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
+ * int : current offset into packet data
+ * int : length of IDs in packet.
+ * int : length of this clv
+ *
+ * Output:
+ * void, will modify proto_tree if not null.
+ */
+static void
+dissect_lsp_nlpid_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_nlpid_clv(tvb, pinfo, tree, offset, length);
+}
+
+/*
+ * Name: dissect_lsp_mt_clv()
+ *
+ * Description:
+ * Decode for a lsp packets Multi Topology clv. Calls into the
+ * clv common one.
+ *
+ * Input:
* u_char * : packet data
* int : current offset into packet data
* guint : length of this clv
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_nlpid_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_nlpid_clv(pd, offset, length, fd, tree );
+dissect_lsp_mt_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_mt_clv(tvb, pinfo, tree, offset, length,
+ hf_isis_lsp_clv_mt );
}
/*
* clv common one.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
* int : current offset into packet data
- * guint : length of this clv
* int : length of IDs in packet.
- * frame_data * : frame data
+ * int : length of this clv
+ *
+ * Output:
+ * void, will modify proto_tree if not null.
+ */
+static void
+dissect_lsp_hostname_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_hostname_clv(tvb, pinfo, tree, offset, length);
+}
+
+
+/*
+ * Name: dissect_lsp_te_router_id_clv()
+ *
+ * Description:
+ * Decode for a lsp packets Traffic Engineering ID clv. Calls into the
+ * clv common one.
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
* proto_tree * : proto tree to build on (may be null)
+ * int : current offset into packet data
+ * int : length of IDs in packet.
+ * int : length of this clv
*
* Output:
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_hostname_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_hostname_clv(pd, offset, length, fd, tree );
+dissect_lsp_te_router_id_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_te_router_id_clv(tvb, pinfo, tree, offset, length,
+ hf_isis_lsp_clv_te_router_id );
}
+
+
/*
* Name: dissect_lsp_ip_int_addr_clv()
*
* clv common one.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
* int : current offset into packet data
- * guint : length of this clv
* int : length of IDs in packet.
- * frame_data * : frame data
- * proto_tree * : proto tree to build on (may be null)
+ * int : length of this clv
*
* Output:
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_ip_int_addr_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_ip_int_clv(pd, offset, length, fd, tree,
+dissect_lsp_ip_int_addr_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_ip_int_clv(tvb, pinfo, tree, offset, length,
hf_isis_lsp_clv_ipv4_int_addr );
}
+/*
+ * Name: dissect_lsp_ipv6_int_addr_clv()
+ *
+ * Description: Decode an IPv6 interface addr CLV - code 232.
+ *
+ * Calls into the clv common one.
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
+ * int : current offset into packet data
+ * int : length of IDs in packet.
+ * int : length of this clv
+ *
+ * Output:
+ * void, will modify proto_tree if not null.
+ */
+static void
+dissect_lsp_ipv6_int_addr_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_ipv6_int_clv(tvb, pinfo, tree, offset, length,
+ hf_isis_lsp_clv_ipv6_int_addr );
+}
+
/*
* Name: dissect_lsp_L1_auth_clv()
*
* clv common one. An auth inside a L1 LSP is a per area password
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
* int : current offset into packet data
- * guint : length of this clv
* int : length of IDs in packet.
- * frame_data * : frame data
- * proto_tree * : proto tree to build on (may be null)
+ * int : length of this clv
*
* Output:
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_l1_auth_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_authentication_clv(pd, offset, length, fd, tree,
+dissect_lsp_l1_auth_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_authentication_clv(tvb, pinfo, tree, offset, length,
"Per area authentication" );
}
* clv common one. An auth inside a L2 LSP is a per domain password
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : proto tree to build on (may be null)
* int : current offset into packet data
- * guint : length of this clv
* int : length of IDs in packet.
- * frame_data * : frame data
- * proto_tree * : proto tree to build on (may be null)
+ * int : length of this clv
*
* Output:
* void, will modify proto_tree if not null.
*/
static void
-dissect_lsp_l2_auth_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_authentication_clv(pd, offset, length, fd, tree,
+dissect_lsp_l2_auth_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_authentication_clv(tvb, pinfo, tree, offset, length,
"Per domain authentication" );
}
* one.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_area_address_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- isis_dissect_area_address_clv(pd, offset, length, fd, tree );
+dissect_lsp_area_address_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ isis_dissect_area_address_clv(tvb, pinfo, tree, offset, length);
}
/*
* addresses.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
* int : set to decode first octet as virtual vs reserved == 0
* int : set to indicate EIS instead of IS (6 octet per addr instead of 7)
*
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_eis_neighbors_clv_inner(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree,
- int show_virtual, int is_eis) {
+dissect_lsp_eis_neighbors_clv_inner(tvbuff_t *tvb, packet_info *pinfo,
+ proto_tree *tree, int offset,
+ int length, int id_length, int show_virtual, int is_eis)
+{
proto_item *ti;
proto_tree *ntree = NULL;
int tlen;
if ( tree ) {
if ( show_virtual ) {
/* virtual path flag */
- proto_tree_add_text ( tree, NullTVB, offset, 1,
- &pd[offset] ? "IsNotVirtual" : "IsVirtual" );
+ proto_tree_add_text ( tree, tvb, offset, 1,
+ tvb_get_guint8(tvb, offset) ? "IsNotVirtual" : "IsVirtual" );
} else {
- proto_tree_add_text ( tree, NullTVB, offset, 1,
+ proto_tree_add_text ( tree, tvb, offset, 1,
"Reserved value 0x%02x, must == 0",
- pd[offset] );
+ tvb_get_guint8(tvb, offset) );
}
}
offset++;
while ( length > 0 ) {
if (length<tlen) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"short E/IS reachability (%d vs %d)", length,
tlen );
return;
*/
if ( tree ) {
if ( is_eis ) {
- ti = proto_tree_add_text ( tree, NullTVB, offset, tlen,
+ ti = proto_tree_add_text(tree, tvb, offset, tlen,
"ES Neighbor: %s",
- print_system_id( pd + offset + 4, id_length ) );
+ print_system_id( tvb_get_ptr(tvb, offset+4, id_length), id_length ) );
} else {
- ti = proto_tree_add_text ( tree, NullTVB, offset, tlen,
+ ti = proto_tree_add_text(tree, tvb, offset, tlen,
"IS Neighbor: %s",
- print_system_id( pd + offset + 4, id_length ) );
+ print_system_id(tvb_get_ptr(tvb, offset+4, id_length), id_length ) );
}
ntree = proto_item_add_subtree(ti,
ett_isis_lsp_clv_is_neighbors);
- dissect_metric ( ntree, offset, pd[offset], "Default",
- TRUE );
- dissect_metric ( ntree, offset + 1, pd[offset+1],
- "Delay", FALSE );
- dissect_metric ( ntree, offset + 2, pd[offset+2],
- "Expense",FALSE );
- dissect_metric ( ntree, offset + 3, pd[offset+3],
- "Error", FALSE );
- proto_tree_add_text ( ntree, NullTVB, offset + 4, id_length,
- "Neighbour ID: %s",
- print_system_id( pd + offset + 4, id_length ) );
+
+
+
+ proto_tree_add_text (ntree, tvb, offset, 1,
+ "Default Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset)) ? "External" : "Internal");
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+1))) {
+ proto_tree_add_text (ntree, tvb, offset+1, 1, "Delay Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+1, 1, "Delay Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+1)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+1)) ? "External" : "Internal");
+ }
+
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+2))) {
+ proto_tree_add_text (ntree, tvb, offset+2, 1, "Expense Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+2, 1, "Expense Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+2)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+2)) ? "External" : "Internal");
+ }
+
+ if (ISIS_LSP_CLV_METRIC_SUPPORTED(tvb_get_guint8(tvb, offset+3))) {
+ proto_tree_add_text (ntree, tvb, offset+3, 1, "Error Metric: Not supported");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+3, 1, "Error Metric: %d, %s",
+ ISIS_LSP_CLV_METRIC_VALUE(tvb_get_guint8(tvb, offset+3)),
+ ISIS_LSP_CLV_METRIC_IE(tvb_get_guint8(tvb, offset+3)) ? "External" : "Internal");
+ }
+
}
offset += tlen;
length -= tlen;
* the inner function with show virtual set to TRUE and is es set to FALSE.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_l1_is_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- dissect_lsp_eis_neighbors_clv_inner( pd, offset, length, id_length,
- fd, tree, TRUE, FALSE );
+dissect_lsp_l1_is_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
+ length, id_length, TRUE, FALSE);
}
/*
* the inner function with show virtual set to TRUE and es set to TRUE.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_l1_es_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- dissect_lsp_eis_neighbors_clv_inner( pd, offset, length, id_length,
- fd, tree, TRUE, TRUE);
+dissect_lsp_l1_es_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
+ length, id_length, TRUE, TRUE);
}
/*
* to FALSE
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_l2_is_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
- dissect_lsp_eis_neighbors_clv_inner(pd, offset, length, id_length,
- fd, tree, FALSE, FALSE);
+dissect_lsp_l2_is_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
+ length, id_length, FALSE, FALSE);
+}
+
+
+/*
+ * Name: dissect_subclv_admin_group ()
+ *
+ * Description: Called by function dissect_lsp_ext_is_reachability_clv().
+ *
+ * This function is called by dissect_lsp_ext_is_reachability_clv()
+ * for dissect the administrive group sub-CLV (code 3).
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out.
+ * int : offset into packet data where we are (beginning of the sub_clv value).
+ *
+ * Output:
+ * void
+ */
+static void
+dissect_subclv_admin_group (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset) {
+ proto_item *ti;
+ proto_tree *ntree;
+ guint32 clv_value;
+ guint32 mask;
+ int i;
+
+ ti = proto_tree_add_text(tree, tvb, offset-2, 6, "Administrative group(s):");
+ ntree = proto_item_add_subtree (ti, ett_isis_lsp_subclv_admin_group);
+
+ clv_value = tvb_get_ntohl(tvb, offset);
+ mask = 1;
+ for (i = 0 ; i < 32 ; i++) {
+ if ( (clv_value & mask) != 0 ) {
+ proto_tree_add_text (ntree, tvb, offset, 4, "group %d", i);
+ }
+ mask <<= 1;
+ }
+}
+
+/*
+ * Name: dissect_subclv_max_bw ()
+ *
+ * Description: Called by function dissect_lsp_ext_is_reachability_clv().
+ *
+ * This function is called by dissect_lsp_ext_is_reachability_clv()
+ * for dissect the maximum link bandwidth sub-CLV (code 9).
+ *
+ * Input:
+ * u_char * : packet data
+ * int : offset into packet data where we are (beginning of the sub_clv value).
+ * proto_tree * : protocol display tree to fill out.
+ *
+ * Output:
+ * void
+ */
+static void
+dissect_subclv_max_bw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
+{
+ guint32 ui;
+ gfloat bw;
+
+ ui = tvb_get_ntohl(tvb, offset);
+ memcpy (&bw, &ui, 4);
+ proto_tree_add_text (tree, tvb, offset-2, 6,
+ "Maximum link bandwidth : %.2f Mbps", bw*8/1000000 );
+}
+
+/*
+ * Name: dissect_subclv_rsv_bw ()
+ *
+ * Description: Called by function dissect_lsp_ext_is_reachability_clv().
+ *
+ * This function is called by dissect_lsp_ext_is_reachability_clv()
+ * for dissect the reservable link bandwidth sub-CLV (code 10).
+ *
+ * Input:
+ * u_char * : packet data
+ * int : offset into packet data where we are (beginning of the sub_clv value).
+ * proto_tree * : protocol display tree to fill out.
+ *
+ * Output:
+ * void
+ */
+static void
+dissect_subclv_rsv_bw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
+{
+ guint32 ui;
+ gfloat bw;
+
+ ui = tvb_get_ntohl(tvb, offset);
+ memcpy (&bw, &ui, 4);
+ proto_tree_add_text (tree, tvb, offset-2, 6,
+ "Reservable link bandwidth: %.2f Mbps", bw*8/1000000 );
+}
+
+/*
+ * Name: dissect_subclv_unrsv_bw ()
+ *
+ * Description: Called by function dissect_lsp_ext_is_reachability_clv().
+ *
+ * This function is called by dissect_lsp_ext_is_reachability_clv()
+ * for dissect the unreserved bandwidth sub-CLV (code 11).
+ *
+ * Input:
+ * u_char * : packet data
+ * int : offset into packet data where we are (beginning of the sub_clv value).
+ * proto_tree * : protocol display tree to fill out.
+ *
+ * Output:
+ * void
+ */
+static void
+dissect_subclv_unrsv_bw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
+{
+ proto_item *ti;
+ proto_tree *ntree;
+ guint32 ui;
+ gfloat bw;
+ int i;
+
+ ti = proto_tree_add_text (tree, tvb, offset-2, 34, "Unreserved bandwidth:");
+ ntree = proto_item_add_subtree (ti, ett_isis_lsp_subclv_unrsv_bw);
+
+ for (i = 0 ; i < 8 ; i++) {
+ ui = tvb_get_ntohl(tvb, offset);;
+ memcpy (&bw, &ui, 4);
+ proto_tree_add_text (ntree, tvb, offset+4*i, 4,
+ "priority level %d: %.2f Mbps", i, bw*8/1000000 );
+ }
+}
+
+/*
+ * Name: dissect_lsp_ext_is_reachability_clv()
+ *
+ * Description: Decode a Extended IS Reachability CLV - code 22
+ *
+ * The extended IS reachability TLV is an extended version
+ * of the IS reachability TLV (code 2). It encodes the metric
+ * as a 24-bit unsigned interger and allows to add sub-CLV(s).
+ *
+ * Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : offset into packet data where we are.
+ * int : length of IDs in packet.
+ * int : length of clv we are decoding
+ *
+ * Output:
+ * void, but we will add to proto tree if !NULL.
+ */
+static void
+dissect_lsp_ext_is_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ proto_item *ti;
+ proto_tree *ntree = NULL;
+ guint8 subclvs_len;
+ guint8 len, i;
+ guint8 clv_code, clv_len;
+
+ if (!tree) return;
+
+ while (length > 0) {
+ ti = proto_tree_add_text (tree, tvb, offset, -1,
+ "IS neighbor: %s",
+ print_system_id (tvb_get_ptr(tvb, offset, 7), 7) );
+ ntree = proto_item_add_subtree (ti,
+ ett_isis_lsp_part_of_clv_ext_is_reachability );
+
+ proto_tree_add_text (ntree, tvb, offset+7, 3,
+ "Metric: %d", tvb_get_ntoh24(tvb, offset+7) );
+
+ subclvs_len = tvb_get_guint8(tvb, offset+10);
+ if (subclvs_len == 0) {
+ proto_tree_add_text (ntree, tvb, offset+10, 1, "no sub-TLVs present");
+ }
+ else {
+ i = 0;
+ while (i < subclvs_len) {
+ clv_code = tvb_get_guint8(tvb, offset+11+i);
+ clv_len = tvb_get_guint8(tvb, offset+12+i);
+ switch (clv_code) {
+ case 3 :
+ dissect_subclv_admin_group(tvb, pinfo, ntree, offset+13+i);
+ break;
+ case 6 :
+ proto_tree_add_text (ntree, tvb, offset+11+i, 6,
+ "IPv4 interface address: %s", ip_to_str (tvb_get_ptr(tvb, offset+13+i, 4)) );
+ break;
+ case 8 :
+ proto_tree_add_text (ntree, tvb, offset+11+i, 6,
+ "IPv4 neighbor address: %s", ip_to_str (tvb_get_ptr(tvb, offset+13+i, 4)) );
+ break;
+ case 9 :
+ dissect_subclv_max_bw (tvb, pinfo, ntree, offset+13+i);
+ break;
+ case 10:
+ dissect_subclv_rsv_bw (tvb, pinfo, ntree, offset+13+i);
+ break;
+ case 11:
+ dissect_subclv_unrsv_bw (tvb, pinfo, ntree, offset+13+i);
+ break;
+ case 18:
+ proto_tree_add_text (ntree, tvb, offset+11+i, 5,
+ "Traffic engineering default metric: %d",
+ tvb_get_ntoh24(tvb, offset+13+i) );
+ break;
+ case 250:
+ case 251:
+ case 252:
+ case 253:
+ case 254:
+ proto_tree_add_text (ntree, tvb, offset+11+i, clv_len+2,
+ "Unknown Cisco specific extensions: code %d, length %d",
+ clv_code, clv_len );
+ break;
+ default :
+ proto_tree_add_text (ntree, tvb, offset+11+i, clv_len+2,
+ "Unknown sub-CLV: code %d, length %d", clv_code, clv_len );
+ break;
+ }
+ i += clv_len + 2;
+ }
+ }
+
+ len = 11 + subclvs_len;
+ proto_item_set_len (ti, len);
+ offset += len;
+ length -= len;
+ }
+}
+
+/* MT IS */
+
+
+
+
+static void dissect_lsp_mt_is_reachability_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
+ proto_item *ti;
+ proto_tree *ntree = NULL;
+ guint8 subclvs_len;
+ guint8 len;
+
+ int mt_block;
+ char mt_desc[60];
+
+ if (!tree) return;
+
+ while (length > 0) {
+
+ /* fetch two bytes */
+ mt_block = tvb_get_ntohs(tvb, offset);
+
+ /* mask out the lower 12 bits */
+ switch(mt_block&0x0fff) {
+ case 0:
+ strcpy(mt_desc,"IPv4 unicast");
+ break;
+ case 1:
+ strcpy(mt_desc,"In-Band Management");
+ break;
+ case 2:
+ strcpy(mt_desc,"IPv6 unicast");
+ break;
+ case 3:
+ strcpy(mt_desc,"Multicast");
+ break;
+ case 4095:
+ strcpy(mt_desc,"Development, Experimental or Proprietary");
+ break;
+ default:
+ strcpy(mt_desc,"Reserved for IETF Consensus");
+ }
+
+ proto_tree_add_text ( tree, tvb, offset, 2 ,
+ "%s Topology (0x%x)",
+ mt_desc,
+ mt_block&0xfff );
+
+ ti = proto_tree_add_text (tree, tvb, offset+2, -1,
+ "IS neighbor: %s",
+ print_system_id(tvb_get_ptr(tvb, offset+2, 7), 7) );
+
+ ntree = proto_item_add_subtree (ti,
+ ett_isis_lsp_part_of_clv_mt_is );
+
+ proto_tree_add_text (ntree, tvb, offset+9, 3,
+ "Metric: %d", tvb_get_ntoh24(tvb, offset+9) );
+
+ subclvs_len = tvb_get_guint8(tvb, offset+12);
+ if (subclvs_len == 0) {
+ proto_tree_add_text (ntree, tvb, offset+12, 1, "no sub-TLVs present");
+ } else {
+ proto_tree_add_text (ntree, tvb, offset+12, 1, "sub-TLVs present");
+ }
+
+ len = 13 + subclvs_len;
+ proto_item_set_len (ti, len);
+ offset += len;
+ length -= len;
+
+ }
}
/*
* "id_length"-octet IS.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_partition_dis_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
-
+dissect_lsp_partition_dis_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
if ( length < id_length ) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"short lsp parition DIS(%d vs %d)", length,
id_length );
return;
* Gotta build a sub-tree for all our pieces
*/
if ( tree ) {
- proto_tree_add_text ( tree, NullTVB, offset, id_length,
+ proto_tree_add_text ( tree, tvb, offset, id_length,
"Partition designated L2 IS: %s",
- print_system_id( pd + offset, id_length ) );
+ print_system_id( tvb_get_ptr(tvb, offset, id_length), id_length ) );
}
length -= id_length;
offset += id_length;
if ( length > 0 ){
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"Long lsp parition DIS, %d left over", length );
return;
}
* (see dissect_metric) followed by n addresses.
*
* Input:
- * u_char * : packet data
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to fill out. May be NULL
* int : offset into packet data where we are.
- * guint : length of clv we are decoding
* int : length of IDs in packet.
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * int : length of clv we are decoding
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
static void
-dissect_lsp_prefix_neighbors_clv(const u_char *pd, int offset,
- guint length, int id_length, frame_data *fd, proto_tree *tree) {
+dissect_lsp_prefix_neighbors_clv(tvbuff_t *tvb,
+ packet_info *pinfo, proto_tree *tree, int offset,
+ int id_length, int length)
+{
char *sbuf;
int mylen;
if ( length < 4 ) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"Short lsp prefix neighbors (%d vs 4)", length );
return;
}
if ( tree ) {
- dissect_metric ( tree, offset, pd[offset], "Default", TRUE );
- dissect_metric ( tree, offset + 1, pd[offset+1],
- "Delay", FALSE );
- dissect_metric ( tree, offset + 2, pd[offset+2],
- "Expense", FALSE );
- dissect_metric ( tree, offset + 3, pd[offset+3],
- "Error", FALSE );
+ dissect_metric (tvb, pinfo, tree, offset,
+ tvb_get_guint8(tvb, offset), "Default", TRUE );
+ dissect_metric (tvb, pinfo, tree, offset+1,
+ tvb_get_guint8(tvb, offset+1), "Delay", FALSE );
+ dissect_metric (tvb, pinfo, tree, offset+2,
+ tvb_get_guint8(tvb, offset+2), "Expense", FALSE );
+ dissect_metric (tvb, pinfo, tree, offset+3,
+ tvb_get_guint8(tvb, offset+3), "Error", FALSE );
}
offset += 4;
length -= 4;
while ( length > 0 ) {
- mylen = pd[offset];
+ mylen = tvb_get_guint8(tvb, offset);
length--;
if (length<=0) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"Zero payload space after length in prefix neighbor" );
return;
}
if ( mylen > length) {
- isis_dissect_unknown(offset, length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"Interal length of prefix neighbor too long (%d vs %d)",
mylen, length );
return;
* Lets turn the area address into "standard" 0000.0000.etc
* format string.
*/
- sbuf = print_area( pd + offset + 1, mylen );
+ sbuf = print_area( tvb_get_ptr(tvb, offset+1, mylen), mylen );
/* and spit it out */
if ( tree ) {
- proto_tree_add_text ( tree, NullTVB, offset, mylen + 1,
+ proto_tree_add_text ( tree, tvb, offset, mylen + 1,
"Area address (%d): %s", mylen, sbuf );
}
offset += mylen + 1;
* Display a LSP id into the display tree.
*
* Input:
- * char * : title string
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
* proto_tree * : tree to display into. REQUIRED
- * u_char * : packet data
* int : offset into packet data where we are.
+ * char * : title string
* int : length of IDs in packet.
*
* Output:
* void, but we will add to proto tree
*/
void
-isis_lsp_decode_lsp_id(char *tstr, proto_tree *tree, const u_char *pd,
- int offset, int id_length ) {
- proto_tree_add_text(tree, NullTVB, offset, id_length + 2,
+isis_lsp_decode_lsp_id(tvbuff_t *tvb, packet_info *pinfo,
+ proto_tree *tree, int offset, char *tstr, int id_length)
+{
+ proto_tree_add_text(tree, tvb, offset, id_length + 2,
"%s: %s.%02x-%02x", tstr,
- print_system_id( pd + offset, id_length ),
- pd[offset + id_length],
- pd[offset + id_length + 1] );
+ print_system_id( tvb_get_ptr(tvb, offset, id_length), id_length ),
+ tvb_get_guint8(tvb, offset+id_length),
+ tvb_get_guint8(tvb, offset+id_length+1) );
}
/*
* de-mangler with the right list of valid CLVs.
*
* Input:
+ * tvbuff_t * : tvbuffer for packet data
+ * packet_info * : info for current packet
+ * proto_tree * : protocol display tree to add to. May be NULL.
+ * int offset : our offset into packet data.
* int : LSP type, a la packet-isis.h ISIS_TYPE_* values
* int : header length of packet.
* int : length of IDs in packet.
- * u_char * : packet data
- * int offset : our offset into packet data.
- * frame_data * : frame data
- * proto_tree * : protocol display tree to add to. May be NULL.
*
* Output:
* void, but we will add to proto tree if !NULL.
*/
void
-isis_dissect_isis_lsp(int lsp_type, int header_length, int id_length,
- const u_char *pd, int offset, frame_data *fd, proto_tree *tree){
+isis_dissect_isis_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
+ int offset, int lsp_type, int header_length, int id_length)
+{
proto_item *ti;
proto_tree *lsp_tree = NULL;
- int hlen;
guint16 pdu_length;
char sbuf[128];
int inx, q, some, value, len;
- OLD_CHECK_DISPLAY_AS_DATA(proto_isis_lsp, pd, offset, fd, tree);
-
- hlen = 2+2+id_length+2+4+2+1;
-
- if (!BYTES_ARE_IN_FRAME(offset, hlen)) {
- isis_dissect_unknown(offset, hlen, tree, fd,
- "not enough capture data for header (%d vs %d)",
- hlen, END_OF_FRAME);
- return;
- }
-
if (tree) {
- ti = proto_tree_add_item(tree, proto_isis_lsp, NullTVB,
- offset, END_OF_FRAME, FALSE);
+ ti = proto_tree_add_text(tree, tvb, offset, -1,
+ PROTO_STRING_LSP);
lsp_tree = proto_item_add_subtree(ti, ett_isis_lsp);
}
- pdu_length = pntohs(&pd[offset]);
+ pdu_length = tvb_get_ntohs(tvb, offset);
if (tree) {
- proto_tree_add_uint(lsp_tree, hf_isis_lsp_pdu_length, NullTVB,
+ proto_tree_add_uint(lsp_tree, hf_isis_lsp_pdu_length, tvb,
offset, 2, pdu_length);
}
offset += 2;
if (tree) {
- proto_tree_add_uint(lsp_tree, hf_isis_lsp_remaining_life, NullTVB,
- offset, 2, pntohs(&pd[offset]));
+ proto_tree_add_uint(lsp_tree, hf_isis_lsp_remaining_life, tvb,
+ offset, 2, tvb_get_ntohs(tvb, offset));
}
offset += 2;
if (tree) {
- isis_lsp_decode_lsp_id("LSP ID", lsp_tree, pd, offset,
- id_length );
+ isis_lsp_decode_lsp_id(tvb, pinfo, lsp_tree, offset,
+ "LSP ID", id_length);
}
offset += id_length + 2;
if (tree) {
- proto_tree_add_uint(lsp_tree, hf_isis_lsp_sequence_number, NullTVB,
+ proto_tree_add_uint(lsp_tree, hf_isis_lsp_sequence_number, tvb,
offset, 4,
- pntohl(&pd[offset]));
+ tvb_get_ntohl(tvb, offset));
}
offset += 4;
if (tree) {
/* XXX -> we could validate the cksum here! */
- proto_tree_add_uint(lsp_tree, hf_isis_lsp_checksum, NullTVB,
- offset, 2, pntohs(&pd[offset]));
+ proto_tree_add_uint(lsp_tree, hf_isis_lsp_checksum, tvb,
+ offset, 2, tvb_get_ntohs(tvb, offset));
}
offset += 2;
*/
sbuf[0] = 0;
some = 0;
- value = ISIS_LSP_ATT(pd[offset]);
+ value = ISIS_LSP_ATT(tvb_get_guint8(tvb, offset));
inx = 0;
for ( q = (1<<ISIS_LSP_ATT_SHIFT); q > 0; q = q >> 1 ){
if (q & value) {
inx++;
}
if (!some) {
- strcat ( sbuf, "<none set!>" );
+ strcat ( sbuf, "default-only" );
}
- proto_tree_add_text(lsp_tree, NullTVB, offset + 18, 1,
+ proto_tree_add_text(lsp_tree, tvb, offset + 18, 1,
"Type block(0x%02x): P:%d, Supported metric(s): %s, OL:%d, istype:%s",
- pd[offset],
- ISIS_LSP_PARTITION(pd[offset]) ? 1 : 0,
+ tvb_get_guint8(tvb, offset),
+ ISIS_LSP_PARTITION(tvb_get_guint8(tvb, offset)) ? 1 : 0,
sbuf,
- ISIS_LSP_HIPPITY(pd[offset]) ? 1 : 0,
- val_to_str(ISIS_LSP_IS_TYPE(pd[offset]),
+ ISIS_LSP_HIPPITY(tvb_get_guint8(tvb, offset)) ? 1 : 0,
+ val_to_str(ISIS_LSP_IS_TYPE(tvb_get_guint8(tvb, offset)),
isis_lsp_istype_vals, "Unknown (0x%x)")
);
}
len = pdu_length - header_length;
if (len < 0) {
- isis_dissect_unknown(offset, header_length, tree, fd,
+ isis_dissect_unknown(tvb, pinfo, tree, offset,
"packet header length %d went beyond packet",
header_length );
return;
* our list of valid ones!
*/
if (lsp_type == ISIS_TYPE_L1_LSP){
- isis_dissect_clvs ( clv_l1_lsp_opts, len, id_length, pd,
- offset, fd, lsp_tree, ett_isis_lsp_clv_unknown );
+ isis_dissect_clvs(tvb, pinfo, lsp_tree, offset,
+ clv_l1_lsp_opts, len, id_length,
+ ett_isis_lsp_clv_unknown );
} else {
- isis_dissect_clvs ( clv_l2_lsp_opts, len, id_length, pd,
- offset, fd, lsp_tree, ett_isis_lsp_clv_unknown );
+ isis_dissect_clvs(tvb, pinfo, lsp_tree, offset,
+ clv_l2_lsp_opts, len, id_length,
+ ett_isis_lsp_clv_unknown );
}
}
/*
- * Name: proto_register_isis_lsp()
+ * Name: isis_register_lsp()
*
* Description:
* Register our protocol sub-sets with protocol manager.
- * NOTE: this procedure is autolinked by the makefile process that
- * builds register.c
*
- * Input:
- * u_char * : packet data
- * int : offset into packet data where we are.
- * guint : length of clv we are decoding
- * frame_data * : frame data (complete frame)
- * proto_tree * : protocol display tree to fill out. May be NULL
+ * Input:
+ * int : protocol index for the ISIS protocol
*
* Output:
- * void, but we will add to proto tree if !NULL.
+ * void
*/
void
-proto_register_isis_lsp(void) {
+isis_register_lsp(int proto_isis) {
static hf_register_info hf[] = {
{ &hf_isis_lsp_pdu_length,
- { "PDU length", "isis_lsp.pdu_length", FT_UINT16,
- BASE_DEC, NULL, 0x0, "" }},
+ { "PDU length", "isis.lsp.pdu_length", FT_UINT16,
+ BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_isis_lsp_remaining_life,
- { "Remaining life", "isis_lsp.remaining_life", FT_UINT16,
- BASE_DEC, NULL, 0x0, "" }},
+ { "Remaining lifetime", "isis.lsp.remaining_life", FT_UINT16,
+ BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_isis_lsp_sequence_number,
- { "Sequence number", "isis_lsp.sequence_number",
- FT_UINT32, BASE_HEX, NULL, 0x0, "" }},
+ { "Sequence number", "isis.lsp.sequence_number",
+ FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
{ &hf_isis_lsp_checksum,
- { "Checksum", "isis_lsp.checksum",FT_UINT16,
- BASE_HEX, NULL, 0x0, "" }},
+ { "Checksum", "isis.lsp.checksum",FT_UINT16,
+ BASE_HEX, NULL, 0x0, "", HFILL }},
{ &hf_isis_lsp_clv_ipv4_int_addr,
- { "IPv4 interface address: ", "isis_lsp.clv_ipv4_int_addr", FT_IPv4,
- BASE_NONE, NULL, 0x0, "" }},
+ { "IPv4 interface address", "isis.lsp.clv_ipv4_int_addr", FT_IPv4,
+ BASE_NONE, NULL, 0x0, "", HFILL }},
+
+ { &hf_isis_lsp_clv_ipv6_int_addr,
+ { "IPv6 interface address", "isis.lsp.clv_ipv6_int_addr", FT_IPv6,
+ BASE_NONE, NULL, 0x0, "", HFILL }},
+
+ { &hf_isis_lsp_clv_te_router_id,
+ { "Traffic Engineering Router ID", "isis.lsp.clv_te_router_id", FT_IPv4,
+ BASE_NONE, NULL, 0x0, "", HFILL }},
};
static gint *ett[] = {
&ett_isis_lsp,
&ett_isis_lsp_clv_area_addr,
&ett_isis_lsp_clv_is_neighbors,
+ &ett_isis_lsp_clv_ext_is_reachability, /* CLV 22 */
+ &ett_isis_lsp_part_of_clv_ext_is_reachability,
+ &ett_isis_lsp_subclv_admin_group,
+ &ett_isis_lsp_subclv_unrsv_bw,
&ett_isis_lsp_clv_unknown,
&ett_isis_lsp_clv_partition_dis,
&ett_isis_lsp_clv_prefix_neighbors,
&ett_isis_lsp_clv_nlpid,
&ett_isis_lsp_clv_hostname,
&ett_isis_lsp_clv_ipv4_int_addr,
+ &ett_isis_lsp_clv_ipv6_int_addr, /* CLV 232 */
+ &ett_isis_lsp_clv_te_router_id,
&ett_isis_lsp_clv_ip_reachability,
+ &ett_isis_lsp_clv_ext_ip_reachability, /* CLV 135 */
+ &ett_isis_lsp_part_of_clv_ext_ip_reachability,
+ &ett_isis_lsp_clv_ipv6_reachability, /* CLV 236 */
+ &ett_isis_lsp_part_of_clv_ipv6_reachability,
+ &ett_isis_lsp_clv_mt,
+ &ett_isis_lsp_clv_mt_is,
+ &ett_isis_lsp_part_of_clv_mt_is,
};
- proto_isis_lsp = proto_register_protocol(PROTO_STRING_LSP,
- "ISIS LSP", "isis_lsp");
- proto_register_field_array(proto_isis_lsp, hf, array_length(hf));
+ proto_register_field_array(proto_isis, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
git.samba.org / obnox / wireshark / wip.git / blobdiff